Window-operating mechanism.



S. BURK.

WINDOW OPERATING MECHANISM.

APPLICATION FILED AUG20, I9I5.

ES.. S .w m W A TTU/Ml E I THE COLUMBIA PLANOGRAPH .60.. WASHINGTON, D. C.

' sash 29 of the window.

on the shaft 25 between the bosses 21 and 23 is held a toothed wheel 30 which is in mesh with a toothed `rack 31 preferably countersunken in the opposed edge of the frame of the upper sash 28 of the window. Also on the shaft 25, and journaled in the bearing of the recessed bcss 23 is a sleeve 32 which is freely rotatable onrthe shaft as well as being rotatable in this recessed boss, and keyed on the sleeve adjacent to the recess of the boss 23 is a toothed wheel 33 in mesh with a toothed rack 34 which is countersunken in the opposed edge of the lower In the recess 22 of the boss 21 and encircling the shaft 25 is a spiral spring 35 having one end fastened to this shaft, at35a, and the other end of the spring is fastened to the boss, at 351. In the recess 24 of the boss 23 and encircling the sleeve 32 is another spiral spring 36 having one end held, at 36a, to this sleeve, and the other end of the spring is secured, at 36", to the boss. The spring 35 is tensioned for normally serving to rotate the shaft 25 and the toothed wheel 30 to force the rack 31 and the upper sash 28 upwardly to a closed position in the frame of the window, while the spring 36 is tensioned for normally serving to revolve the sleeve 32 and the toothed wheel 33 to force the rack 34 and the lower sash 29 downwardly to a closed position in the frame of the window. Thus when the upper sash is lowered the rack 31 will be moved to rotate the wheel 30 and the shaft 25 against the tension of the spring 35, and when the lower sash is raised the rack 34 will be guided to rotate the wheel 33 and the sleeve 32 against the tensicn of the spring 36.

Serving as means to hold the sashes against accidental movement when in raised or lowered positions as well as preventing the sashes from being surreptitiously opened from the outside of the window, I provide a locking element` as 37. The locking element 37 has a bar 38 which is freely movable in the slot 17 of the plate 16 of the casing 10. The locking bar 38 is of a width so that its upper edge is in mov` able contact with the free edge of the bar 13 of the casing and so that its lower edge will extend in the spaces between the teeth of the wheels 30 and 33, and the lower part of the locking bar is tapered downwardly to fit snugly, but be freely movable betweenthe teeth of these wheels. The bar 38 is somewhat longer than the width of the casing 10 so that one end thereof will eX- tend through an opening in the frame of the window inside thereof, this opening, not shown, leading from the recess 26 of the frame, and on this extending end of the bar is a handle, as 39, to allow the bar to be conveniently pushed and pulled inwardly and outwardly of the opening of the recess for slidably guiding the bar in the slot 17 of the plate 16 of the casing. Projecting upwardly from the top o'f theY locking bar 38 is a lug 40 adapted to abut against the stop 15 of the bar 13 of the casing, and ex- 7 tending from this lug is a rod 41 having its other end part freely movable in the aperture of the lug 14 ofthe bar 13. IVhen the lccking bar 38 is forced inwardly of the casing the rod 41 will be guided through the 7 aperture of the lug 14, and serving to normally force the locking bar outwardly of the casing encircling the rod 41 between the'lug 40 and the apertured lug 14 is a spiral spring 42. As above explained the tapered lower edge of the locking bar 38 is, normally disposed in one of the spaces loe-` tween the teeth of the wheels 30 and 33 to prevent their rotation and for locking the window sashes against accidental movement. The handle 39 and the adjacent part of the locking bar 38 will then extend some distance outwardly of the casing 10 and outwardly of the frame of the window. To permit the locking lbai-38 to be freed of its engagement with the toothed wheels when the bar is forced inwardly of the casing and for also permitting the sashes of the window to be raised and lowered, as willbe hereinafter more fully explained, in the lower edge of the locking bar are two notches, or recesses 43 and 44. Both of the notches 43 and 44 are somewhat wider than the toothed wheels 30 and 33, and these notches are spaced apart substantially the 1 same distance as the spacing between the toothed wheels so that when the locking bar 38 is guided inwardly of the casing `10 the lower edge of this bar will be freed of engagement with the teeth of the `wheels 1 which will be disposed in these notches. The releasing of this engagement between the locking bar and the toothed wheels will permit the sashes of the window to be freely raised and lowered. 1 In order to releasably hold the locking bar 38l against accidental movement when directed inwardly of the casing, in a recess 45 provided in the extension 19 of the plate 16 of the casing, is a transversely disposed 1 bolt, or pin` 46 which ismovably held in openings in this extension so that one end of the bolt will pass into an orifice, as 47, arranged in the locking bar 38 when the f bar is guided inwardly of the casing. On 1 the central part of the bolt 46 in the recess 45 is rigidly held a wheel 48 having part of its peripheral edge cutout in a tapered fashion, as at 49, to provide the wheel with a cam edge. Encircling one end part of the l' bolt 46 between the cam edged wheel 48 and one of the walls of the recess 45 is a spiral spring 50 normally servingto force the other end of the bolt outwardly of this recess into yieldingv contact with the locking` bar 38. en 'i that this end ofthe bolt will pass into-the orifice 47 of the locking bar `when the bar is guided .inwardly of the casing. Also in the recess 45 is an operating lever 51 which is fulcrumed, at 52, to the extension 19 of the plate 16 of the casing 10. This lever is of a length so that one of its ends is movably seated in the tapered cut-out part 49 of the cam-edged wheel 48 and so that the other end of the lever extends outwardly of the recess 45, this end terminating with a handle 53 which is curved in a direction away from the locking bar 38.

In practice when the sashes of the window are closed and locked against being surreptitiously opened from the outside of the window the bar 38 of the locking element 37 is disposed outwardlv of its slot 17 of the plate 16 of the casing. The tension of the spring. 42 will then force the rod 41 and the lug 40 of this locking bar toward the lug l5 of the bar 13 of the casing. The spring actuated bolt 46 will also be freed of engagement with the orifice 47 of this locking bar as well as being forced inwardly of the recess 45 against the tension of its spring 50. The lower edge of the locking bar 38 will also be disposed between the teeth of the wheels 30 and 33 to prevent their rotation, and the sashes of the windows will thereby be locked against accidental" movement. When it is desired to raise and lower the sashes one or bothof the sashes are moved accordingly after the locking bar isguided inwardly of the casing by pushing its handle 39. With this movement ofV the locking bar the rod 41 will be directed inwardlyV of the aperture of the lug 14 of the bar 13 of the casing against the tension of the spring 42, and when the locking bar is forced a proper distance in the slot 17 of the plate 16 the boltv 48 will be forced by the tension of thespring" 50 into the orifice 47 ofthe locking bar. The end of the lever 51 in contact with the tapered cut-out part 49v 'of the cani wheel 48 will likewise be swung toward the locking-bar, and, as" above explained` with this movement of the lock'- ing bar its lower edge will be released from engagement with the toothed wheels 30 and 33 by the toothed wheels being' received in the notches 43 and 44 of the locking bar.

he sashes of the window may then be ad- Y justably moved as desired. for instance if the upperV sash is lowered the movement of its rack will rotate the shaft'25' and the toothed wheel 30 against they tension of the spiral spring 35 in the boss 21, and if the lower sash is raised the movement of its raclr will rotate the sleeve`32 and the toothed wheel 33 against the tension of the spiral spring"A 36 in the boss 23. The sashes may then be again releasably locked aga-inst movement by forcing the handle 53 of the '16a/er 5111i' a' "dr'etion tow-ard the.,.loclring bar as.` The other @naar this lever win then be swung in an opposite direction for ,moving the cam wheel 43 towardv the supporting plate 11 of the casing and for forcing the bolt 46 from the orifice 47 of the locking bar. The tension of the spring 42 will therebv cause a reverse movement of the rod 41 and the locking bar 38 so' that the lower edge of thelocking bar will be reseated in the teeth of the wheels 30 and 33 to lock these wheels against movement as well as preventing the sashes from being moved. By the employment ofmy mechanism in this manner the sash of the windows of buildings or other structures may be easily raised and lowered to any desired heights without requiring the use of weights and cords, and the sashes may be held in locked positions without liability of being surreptitiously unlocked from outside of the buildingr in view of the mechanism being applied to the frame of the window as well as beingl operable only from the interior of the window.

In the foregoing description, I have em'- bodied the preferred form of my invention, but I do not wish to be understood as limiting myself thereto, as I am aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairly fall within the scope thereof.

Having thus described my invention, I claim as new and desire to secure by Iletters Patent r- 1. In a` window operating mechanism-` a casing adapted to be held. adjacent to the sash of a window having a vertically dis posed stationary toothed rack, a toothed wheel rotatably held in the casing, and meshing with the toothed rack, a spring actuated locking bar movable inwardly and outwardly7 of the casing so as to engage and be disengaged from the toothed wheel, the 4said bar being normally in engagement with the toothed wheel to prevent rotation of the wheel and to preventl movement of the toothed rack as well as the sash when the bar is disposed outwardly of the casing, spring actuating means in the casing, adapted to yieldingly enga ge the bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheel whereby the sash may be raised or lowered, and means in the casing, adapted to be manually operated for releasing` the engagement of the spring actuating means with the locking bar so that the locking bar will be reversely forced bv its spring into engagement with the toothed wheel.y substantially as set forth and for the purpose specified.

In a window operating mechanism, a

casing adapted to be held adjacent to the sashV of a window having a vertically dis- -posed stationary toothed rack, a toothed wheel rotatably held in the casing, and` meshing with the toothed rack, a spring in the casing normally serving to rotate the wheel for yieldingly forcing the sash to a closed position, a spring actuated locking bar movable inwardly and outwardly of the easing so as to engage and be disengaged from the toothed wheel, the said bar being normally in engagement with the toothed wheel to prevent rotation of the wheel and to prevent movement of the toothed rack as well as the sash when the bar is disposed outwardly of the casing, a spring actuated bolt in the casing, adapted to yieldingly engage the bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheel whereby the sash may be raised or lowered, and means in the casing, adapted to be manually operated for releasing the engagement of the bolt with the locking bar so that the locking bar will be reversely forced bv its spring into engagement with the toothed wheel, sub stantially as set forth and for the purpose specified.

8. In a window operating mechanism, a casing adapted to be held adjacent to the sash of a window having a vertically disposed stationary toothed rack, a toothed wheel rotatably held in the casing, and meshing with the toothed rack, av spring in the casing normally serving to rotate the wheel for yieldingly forcing the sash to a closed position, a spring actuated locking bar movable inwardly and outwardly of the casing so as to engage and be disengaged from the toothed wheel` the said bar being normally in engagement with the toothed wheel to prevent rotation of the wheel and to prevent movement of the toothed rack as well as the sash when the bar is disposed outwardly of the casing, a spring actuated bolt in the casing, adapted to yieldinglv engage the bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheel whereby the sash may be raised or lowered, and a lever in the casing, adapted to be manually operated for releasing the engagement of tbe bolt with the locking bar so that the locking bar will be reversely forced by its spring into engagement with the toothed wheel, substantially as set forth and for the purpose specified.

1l. In a window operating mechanism. a casing adapted to be held adjacent to the adjoining parts of the upper and lower sa shes of a window, each having a vertically disposed stationary toothed rack, two toothed wheels rotatably held in the casing, and one meshing with each of the toothed racks to permit the sashes tobe independ ently or simultaneously raised and lowered, a spring actuated locking bar movable inwardly and outwardly of the casing so as to engage and be disengaged from both of the toothed wheels, the said bar being normally in engagement with the toothed wheels to prevent rotation of the wheels and to prevent movement of thetoothed racks as well as the sashes when the bar is disposed outwardly of the casing, a spring actuated bolt in the casing, adapted to yieldingly engage the bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheels, and means in the casing, adapted to be manually operated for releasing the engagement of the bolt with the locking bar so that the locking bar will be reversely forced by its spring into engagement with the toothed wheels, substantially as set forth and for the purpose specified.

5. In a window operating mechanism, a casing adapted to be held adjacent to the adjoining parts of the upper and lower sashes of a window each having a vertically disposed stationary toothed rack, two toothed wheels rotatably held in the casing, and one meshing with each of the toothed racks to permit the sashes to be independently or simultaneously raised and lowered, a spring actuated locking bar movable inwardly and outwardly of the casing so as to engage and be disengaged from the toothed wheels, the said bar being normally in engagement with the toothed wheels to prevent rotation of the wheels and to prevent movement of the toothed racks as well as the sashes when the bar is disposed outwardly of the casing, a spring` actuated bolt in the casing, adapted to yieldingly engage Ithe bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheels, and a lever in the casing,

adapted to be manually operated for releasing the engagement of the bolt with the lockinr bar so that the locking bar will be reverselv forced by its spring into engagement with the toothed wheels, substantially as set forth and for the purpose specified.

6. In a window operating mechanism, a casing adapted to be held adjacent to the adioining parts of the upper and lower sashes of a window each having a vertically disposed stationary toothed rack, two spaced recessed bosses in the casing, a shaft journaled in the bosses. two spaced toothed wheels held on the shaft, and one meshing with each of the toothed racks to permit the sashes to be independently or simultaneously raised and lowered. spring actuated means in each boss normally serving to rotate each wheel for vieldingly forcing the sashes to closed positions, a spring actuated locking bar movable invvardlv and outwardly of the casing so as to enga ge and be disengaged from the toothed wheels, the ,said

i wheels and toprevent movement of the toothed racks as well as the sashes when the bar is disposed outwardly of the casing, and j spring actuated means in the casing, adapted to yieldingly engage the bar when forced inwardly of the casing to hold the bar free of engagement with the toothed wheels, and said means being manually operable for releasing its engagement with the locking bar so that the locking bar will be reversely forced by its spring into engagement with the toothed wheels, substantially as set forth and for the purpose specified.

7. In a window operating mechanism, a casing adapted to be held adjacent to the adjoining parts of the upper and lower sashes of a window, each having a vertically disposed stationary toothed rack, two spaced recessed bosses in the casing, a Shaft jour naled in the bosses, two Y spaced toothed wheels held on the shaft, and one meshing with each of the toothed racks to permit the sashes to be independently or simultaneously ,raised and lowered, spring actuated means in each boss serving to rotate each wheel for yieldingly forcing the sashes to closed positions, a spring actuated locking bar movable inwardly and outwardly of the casing so as to engage and be'disengaged from the toothed wheels, the said barbeing normally in engagement with the toothed wheels to prevent rotation of the wheels and to prevent movement ofthe toothed racks as well as the sashes when the bar is disposed outwardly of the casing, a spring actuated bolt in the casing, adapted to yieldingly engage the bar when forced inwardly of the casing to hold the bar free of engagemenwith the toothed wheels, and means in the casing, adapted to be manually operated for releasing the engagement of the bolt with the Copies of this patent may be obtained for five cents each, by addressing the locking bar so that the locking bar will he reversely forced by its spring into engagement with the toothed wheels, substantially as set forth and for the purpose specified.

8. In a window operating mechanism, a casing adapted to be held adjacent to the adjoining parts of the upper and lower sashes of a window each having a vertically disposed stationary toothed rack, two spaced recessed bosses in the casing, a shaft journaled in the bosses, two spaced toothed wheels held on the shaft, and one meshing with each of the toothed racks to permit the sashes to be independently or simultaneously raised and lowered, spring actuated means -in each boss serving to rotate each wheel for yieldingly forcing the sashes to closed positions, a spring actuated locking bar movable inwardly and outwardly of the casing so as to engage and be disengaged from the toothed wheels, the said bar being normally in engagement with the toothed wheels to prevent rotation of the wheels and to prevent movement of the toothed racks as well as the sashes when th@l bar is disposed outwardly of the casing, a spring actuated bolt in the casing, adapted to yieldingly en- Agage the bar when forced inwardly of the of engagement a casing to hold the bar free with the toothed wheels, and a lever in the casing, adapted to be manually operated for releasing the engagement of the bolt with the locking bar so that the locking bar will be reversely forced by its spring into engagement with the toothed wheels, substantially as set forth and for the purpose specified.

This specification signed and witnessed this nineteenth day of August A. D. 1915.

SAMUEL BURK.

Witnesses:

Ro'r. B. ABBOTT, W. T. CRIswnLL, Jr.

"Commissioner of Patents,

Washington, 2D. C. 

